Always set the crash information.

There's no reason to do it only on Windows - and, in fact, the only
platform where we currently do anything with the information is OS X.
Every other program in the Wireshark suite that does it at all does it
on all platforms.

Change-Id: I7d017be224628fc08aaf7e64b380af7a5beb0232
Reviewed-on: https://code.wireshark.org/review/2731
Reviewed-by: Guy Harris <guy@alum.mit.edu>